/*
 *  Copyright 2014-2022 The GmSSL Project. All Rights Reserved.
 *
 *  Licensed under the Apache License, Version 2.0 (the License); you may
 *  not use this file except in compliance with the License.
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 */


#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <dlfcn.h>

#include "skf/skf_int.h"
#include "skf/skf_ext.h"
#include "skf/skf_internal.h"

#define SKFerr(e,r)

#define SKF_METHOD_BIND_FUNCTION_EX(func,name) \
    skf->func = (SKF_##func##_FuncPtr)dlsym(skf->dso, "SKF_"#name)

#define SKF_METHOD_BIND_FUNCTION(func) \
	SKF_METHOD_BIND_FUNCTION_EX(func,func)


SKF_METHOD *SKF_METHOD_load_library(const char *so_path)
{
    // SKF_METHOD *ret = NULL;
	SKF_METHOD *skf = NULL;

    do {
        if (!(skf = malloc(sizeof(*skf)))) {
            SKFerr(SKF_F_SKF_METHOD_LOAD_LIBRARY, ERR_R_MALLOC_FAILURE);
            break;
        }
        memset(skf, 0, sizeof(SKF_METHOD));
        skf->dso = dlopen(so_path, RTLD_LAZY);
        if (!(skf->dso)) {
            SKFerr(SKF_F_SKF_METHOD_LOAD_LIBRARY, SKF_R_DSO_LOAD_FAILURE);
            break;
        }

        SKF_METHOD_BIND_FUNCTION(WaitForDevEvent);
        SKF_METHOD_BIND_FUNCTION(CancelWaitForDevEvent);
        SKF_METHOD_BIND_FUNCTION(EnumDev);
        SKF_METHOD_BIND_FUNCTION(ConnectDev);
        SKF_METHOD_BIND_FUNCTION(DisConnectDev);
        SKF_METHOD_BIND_FUNCTION(GetDevState);
        SKF_METHOD_BIND_FUNCTION(SetLabel);
        SKF_METHOD_BIND_FUNCTION(GetDevInfo);
        SKF_METHOD_BIND_FUNCTION(LockDev);
        SKF_METHOD_BIND_FUNCTION(UnlockDev);
        SKF_METHOD_BIND_FUNCTION(Transmit);
        SKF_METHOD_BIND_FUNCTION(ChangeDevAuthKey);
        SKF_METHOD_BIND_FUNCTION(DevAuth);
        SKF_METHOD_BIND_FUNCTION(ChangePIN);
        SKF_METHOD_BIND_FUNCTION(GetPINInfo);
        SKF_METHOD_BIND_FUNCTION(VerifyPIN);
        SKF_METHOD_BIND_FUNCTION(UnblockPIN);
        SKF_METHOD_BIND_FUNCTION(ClearSecureState);
        SKF_METHOD_BIND_FUNCTION(CreateApplication);
        SKF_METHOD_BIND_FUNCTION(EnumApplication);
        SKF_METHOD_BIND_FUNCTION(DeleteApplication);
        SKF_METHOD_BIND_FUNCTION(OpenApplication);
        SKF_METHOD_BIND_FUNCTION(CloseApplication);
        SKF_METHOD_BIND_FUNCTION_EX(CreateObject,CreateFile);
        SKF_METHOD_BIND_FUNCTION_EX(DeleteObject,DeleteFile);
        SKF_METHOD_BIND_FUNCTION_EX(EnumObjects,EnumFiles);
        SKF_METHOD_BIND_FUNCTION_EX(GetObjectInfo,GetFileInfo);
        SKF_METHOD_BIND_FUNCTION_EX(ReadObject,ReadFile);
        SKF_METHOD_BIND_FUNCTION_EX(WriteObject,WriteFile);
        SKF_METHOD_BIND_FUNCTION(CreateContainer);
        SKF_METHOD_BIND_FUNCTION(DeleteContainer);
        SKF_METHOD_BIND_FUNCTION(EnumContainer);
        SKF_METHOD_BIND_FUNCTION(OpenContainer);
        SKF_METHOD_BIND_FUNCTION(CloseContainer);
        SKF_METHOD_BIND_FUNCTION(GetContainerType);
        SKF_METHOD_BIND_FUNCTION(ImportCertificate);
        SKF_METHOD_BIND_FUNCTION(ExportCertificate);
        SKF_METHOD_BIND_FUNCTION(ExportPublicKey);
        SKF_METHOD_BIND_FUNCTION(GenRandom);
        SKF_METHOD_BIND_FUNCTION(GenExtRSAKey);
        SKF_METHOD_BIND_FUNCTION(GenRSAKeyPair);
        SKF_METHOD_BIND_FUNCTION(ImportRSAKeyPair);
        SKF_METHOD_BIND_FUNCTION(RSASignData);
        SKF_METHOD_BIND_FUNCTION(RSAVerify);
        SKF_METHOD_BIND_FUNCTION(RSAExportSessionKey);
        SKF_METHOD_BIND_FUNCTION(ExtRSAPubKeyOperation);
        SKF_METHOD_BIND_FUNCTION(ExtRSAPriKeyOperation);
        SKF_METHOD_BIND_FUNCTION(GenECCKeyPair);
        SKF_METHOD_BIND_FUNCTION(ImportECCKeyPair);
        SKF_METHOD_BIND_FUNCTION(ECCSignData);
        SKF_METHOD_BIND_FUNCTION(ECCVerify);
        SKF_METHOD_BIND_FUNCTION(ECCExportSessionKey);
        SKF_METHOD_BIND_FUNCTION(ExtECCEncrypt);
        SKF_METHOD_BIND_FUNCTION(ExtECCDecrypt);
#ifdef SKF_HAS_ECCDECRYPT
        SKF_METHOD_BIND_FUNCTION(ECCDecrypt);
#endif
        SKF_METHOD_BIND_FUNCTION(ExtECCSign);
        SKF_METHOD_BIND_FUNCTION(ExtECCVerify);
        SKF_METHOD_BIND_FUNCTION(GenerateAgreementDataWithECC);
        SKF_METHOD_BIND_FUNCTION(GenerateAgreementDataAndKeyWithECC);
        SKF_METHOD_BIND_FUNCTION(GenerateKeyWithECC);
        SKF_METHOD_BIND_FUNCTION(ImportSessionKey);
        SKF_METHOD_BIND_FUNCTION(SetSymmKey);
        SKF_METHOD_BIND_FUNCTION(EncryptInit);
        SKF_METHOD_BIND_FUNCTION(Encrypt);
        SKF_METHOD_BIND_FUNCTION(EncryptUpdate);
        SKF_METHOD_BIND_FUNCTION(EncryptFinal);
        SKF_METHOD_BIND_FUNCTION(DecryptInit);
        SKF_METHOD_BIND_FUNCTION(Decrypt);
        SKF_METHOD_BIND_FUNCTION(DecryptUpdate);
        SKF_METHOD_BIND_FUNCTION(DecryptFinal);
        SKF_METHOD_BIND_FUNCTION(DigestInit);
        SKF_METHOD_BIND_FUNCTION(Digest);
        SKF_METHOD_BIND_FUNCTION(DigestUpdate);
        SKF_METHOD_BIND_FUNCTION(DigestFinal);
        SKF_METHOD_BIND_FUNCTION(MacInit);
        SKF_METHOD_BIND_FUNCTION(Mac);
        SKF_METHOD_BIND_FUNCTION(MacUpdate);
        SKF_METHOD_BIND_FUNCTION(MacFinal);
        SKF_METHOD_BIND_FUNCTION(CloseHandle);
    #ifdef SKF_HAS_ECCDECRYPT
        SKF_METHOD_BIND_FUNCTION(ECCDecrypt);
    #endif
        return skf;
    } while(0);

    SKF_METHOD_free(skf);
    return NULL;
}

void SKF_METHOD_free(SKF_METHOD *meth)
{
    if (meth->dso)
        dlclose(meth->dso);
    free(meth);
    meth = NULL;
}
